DethaViana
Luas 1/2 lingkaran : 1/2 x π x r x r = 1/2 x 22/7 x 3,5 x 3,5 = 19,25 Luas persegi : s x s = 7 x 10 = 70 Luas gabungan = 19,25 + 70 = 89,25 (89,1/4) Jadi, jawabannya D
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DethaViana
Thanks... Udah dijadikan jawaban paling cerdas ...
p = 10 cm
l = 7 cm
d = 7 cm
r = 3,5 cm
Ditanya : Luas total tanah = . . . ?
Jawab :
L persegi panjang = p x l
= 10 x 7
= 70 cm²
L setengah Lingkaran = 1/2 x π x r²
= 1/2 x 22/7 x 3.5²
= 1/2 x 22/7 x 12.25
= 1/2 x 38.5
= 19.25 cm²
Luas total = 70 + 19.25
= 89.25 cm²
= 89 1/4 cm² (Jawaban D)
= 1/2 x 22/7 x 3,5 x 3,5
= 19,25
Luas persegi : s x s
= 7 x 10
= 70
Luas gabungan
= 19,25 + 70
= 89,25 (89,1/4)
Jadi, jawabannya D